Nail making machine



April 18, 1939. J. DE J. HERNANDEZ NAIL MAKING MACHINE 2 Sheets-Sheet 1Filed March 28, 1938 April 18, 1939. J. DE .1. HERNANDEZ NAIL MAKINGMACHINE Filed March 28, 1938 2 Sheets-Sheet 2 SMX): mui/af Patented Apr.18, i939 t l y MTEDsTATi-:s' PATENT or-'Flca '2,155,310 NAliL MAKINGIMACHINE .Bos de `Uess Hernndez, Guadalajara, Mexico Application March28, 1938, Serial No. 198,590

` In Mexico February 28, 1938 3 Claims. (Cl. 14o-130) This inventionrelates to nail making machines cording to an embodiment of thisinvention' and more particularly to an improved machine mounted on theframe of a nail makingmachine, whereby a single hammer is capable ofproducing the frame being shown in fragmentary form,

a pluralityof nails with a single impact. Figure 2 is a detail top planof the device show An object of this invention is to provide a in Figure1, multiple feed device for a nail or screw lmaking Figure 3 is asectional view taken on the line machine whereby a plurality of Wires orrods are 3 3 of Figure 2, fed into a position for engagement with theham- Figure 4 is a sectional view taken on the line mer so that a numberof nails, screws, rivets, B- of Figure 2,

10 tacl or the like are headed and otherwise formed Figure 5 is afragmentary sectional view of one 10 by a single operation where in thepast these of the operators forawire gripper, and i articles were formedindividually by providing a Figure 6 is a fragmentary bottom plan of asingle feeding means for each strand or rod and slide and operatortherefor.

also providing a separate hammer and cut-olf Referring to the drawings,the numerall I l means for each article being formed by the designatesgenerally the frame of a nail form- 15 machine. ing machine and in thepresent instance only the Another object of this invention is to providea Arear portion of the machine is disclosed whereV device of this kindin the form-of an attachment the wire enters the machine vfrom the feedor for a conventional nail or screw forming Qmachine supply roller. Ahammer or nail head forming so that a number of articles such as nailsor the member II is connected to a reciprocating-means 20 like may beformed by the single hammer, thus (not shown) and this hammer or headforming increasing the output of the machine without remember II isreciprocated in a horizontal movequiring a speeding up of the machine.ment back and forth relative to a pair of clamp'- Another object of thisinvention is to provide a ing or die members I2. 'I'he die members I2are multiple feed of this kind in the form of grooved connected tosuitable means'whereby these mem- 25 Wire or rod straightening rollerstogether with a bers may be moved transversely of the hammer pullingmeans associated with the rollers which II to a released position andmoved toward each is reciprocated back and forth so as to feed the otherto an operative or wire gripping position. several wire strands to thedies, and in this The construction ,of the wire gripping or die manner,the capacity 'of the machine may be inmembers I2 is conventional and itis believed that 3o creased without the necessity of speeding up the theoperation of these members will be clearly movement ofy the operatingparts of the machine. understood by persons familiar with the art of Afurther object of this invention is to provide nail or screw making. animproved wire pulling means for an article At the present time it is thepractice to feed a forming machine in the form. of a nail making singlewire strand or rod through the gripping or 35 machine so that differentsizes of wire may be die members I2 and the hammer II is then used wi-ththe same machine. moved toward the die members I2 so as to upset Stillanother object of this invention is to the end of the wire and thus forma head on the provide an improved Wire gripping means formend of thewire which later constitutes the head ing part ofthe wire pullingJ meansso that the of a screw, nail, bolt, tack or the like. In the 40 grippingmeans may be suitably tensioned against machines at present in use, aseparate hammer the wire passing through the pulling means. withindividual die members I2 are provided for l To the above objects andothers which may each strand of wire so that but a single nail orhereinafter appear,the invention consists of the other article is headedand otherwise formed at novel construction, combination and arrangementeach reciprocation of the hammer I I. In order to 45 ofv parts as will.be more speciiically referred to provide a means vwhereby the capacityof a nail and as illustrated in the accompanying drawings, formingmachine maybe increased without the wherein is shown an embodiment ofthe invennecessity of speeding up the operating parts of tion, but it isto be understood that changes, the machine, I have provided a pluralityof rod variations and modifications may be resorted to or Wirestraightening rollers I4 which are rotat- 50 which Afall within thescope of the invention as ably secured on bolts I3 and which are securedclaimed. to the frame'portion I0 of the machine. These In the drawings:l rollers i4 are provided in the present instance Figure 1 is a detailside elevation partly in with a pair of spaced apart peripheral groovesI5 longitudinal Asectionof a device constructed acover which-wirestrands I6 pass. There are at 55 grooves I5 in the rollersv I4.

least three of these rollers I4, two of the rollers I4 being positionedas shown in Figure 2 on one side of the wire strands I6 in spaced apartrelation and a third or intermediate roller I4 engages on the oppositeside of the wire strands I6 in a position midway between the two outerrollers I4.

A wire pulling member generally designated as I1 is fixed to a slideplate |8 by means of bolts I9. .The slide member I8 is provided at anintermediate point with a recess 28, and a rock arm or operating lever2| is positioned in this recess 28 and is connected to a. suitable crankmeans forming part of the machine so that the slide member I8 may bereciprocated'back and forth on a guide 22 formed on the frame portionI8. A pair of segmental members 23 engage on opposite sides of theoperating lever 2| and are seated in arcuate sockets 24 provided in theslide member I8. In this manner the operating lever 2| may be rockedback and forth in a horizontal movement and may move relative to theslide plate I8.

The pulling member I1 comprises a base plate 25 provided at the forwardand rear ends thereof with upstanding `flanges 26 and 21. 'I'heseflanges -26 and 21 also extend downwardly over the opposite ends of theslide member I8 as shown at 28 and 29 so as to relieve the bolts I9 ofstrain due to the reciprocation of the pulling member I1 on the guide22. The slide plate or base member 25 is provided with a pair ofupstanding blocks or lugs 38 and 3| and a grooved wire guide member 32secured as by a bolt 33 to the the block 38. The guide member 32 isprovided with a right angularly disposed leg or plate 34 engaging theouter side of the block or lug 38 and the bolts 33 pass through the leg34. One of the wire strands I6 is adapted to pass through the groove inthe upper side of the guide member 32 and the other wire strand I6engages a grooved guide member 35. The guide member 35 is also providedwith a right angularly disposed plate 36 which is fastened as by a bolt31 to the block or lug 3|. The groove in the guide member 35 is disposedin parallel relation to the groove in the guide member 32, but is offsetvertically a distance equal to the space between the The upstandingflange 21 on base plate 25 is provided with a pair of guide openings 38through which the wire strands I6 are adapted to pass. The up- Astandingflange 26 is' alsoprovided with a pair of holes or openings 39 axiallyaligning with the holes 38. The guide members 32 and 35 comprisestationary jaw members, the purpose for'which will be hereinafterdescribed.

A wire gripping member 48 is adjustably mounted in one leg of a bellcrank lever 4| which is secured on a bolt 42 secured to the base plate25. The gripping or clamping member 48 is adjustably secured in the bellcrank 4| by means of a set screw 43 so that the lower or wire engagingend 44 thereof may project downwardly below the bell crank 4Isufficiently to engage a wire strand I6 passing over the stationary jawor. guide member 32. The opposite arm 45 of the bell crank 4| projectsoutwardly and is engaged by a spring pressed plunger 46 disposed in ahousing 41. The plunger 46 may be tensioned by means of a tensioning nut48 which engages against spring 49 `disposed in the housing 41. Thehousing 41 is preferably `formed integrally with theflange 21 andthebase plate 25. The

gripping member 48 is disposed on an oblique angle to the longitudinalaxis of the Wire strand A second bell crank 58 is rockably mounted on abolt 5| secured to the base plate 25 in spaced relatio to the bell crank4| and in a position adjacent the jaw or guide member 35. A grippingmember 52 is adjustablysecured as by a bolt or set screw 53 to one legof the bell crank 58 in a position so that the wire engaging end 54thereof will contact with the second or other strand of wire I6. Thebell crank 58 is provided with one relatively ylong leg or arml 55"against which a spring pressed plunger 56 engages which is slidablycarried by a housing or cylinder 51.` The construction of the plunger 56and the cyl- 1 inder or casing 51 is similar in every detailto theplunger 46 and the cylinder or housing 41.

A lubricating fitting 58 is provided in substantially the center of thebase 25 so that a suitable lubricant may be passed through the baseplate"A 25 in order to lubricate the operating lever 2| and thesegmental members 23 which are disf y posed in the sockets 24 of theslide member I8.

In the use and operation of this device or machine, the rock lever orslide operating -member 2| isrocked back and forth relative to the guidemember 22 and as the pulling member I1 moves ,away from thestraightening rollers I4, the several wire lstrands I6 are pulledtherewith. At the time the pulling member I1 is pulling the wire overthe rollers I4, the gripping members I2 are in spaced apart or releasedposition and the hammer is in a retracted or inoperative position. Whenthe pulling member I1 moves to the/left `to the limit of its movement,the jaw members I2 are moved to engagement with the two wire strands I6and the hammer is moved to the right so as to strike the projecting endsof the strands I6 which project beyond or to the left of the grippingmembers I2. A head is thereby formed on the ends of the wires I6 andduring the formation of the heads 59, the pulling member I1 is moving tothe right with the wire strands I6 sliding along the jaw members 32 and35 and beneath the gripping members 48 and 52. After the heads 59 havebeen formed on the ends of the `wire strands I6, the hammer II isretracted and at the same time the gripping members I2 are movedlaterally to a released position so that the pulling member I1 may'pullthe wire strands I6 forwardly so that the heads59 will project beyondthe gripping members I2 a distance substantially equal to the length ofthe qnails, screws or tacks which are thus being formed. The grippingmembers I2 are then moved to a gripping position and a pair of cuttingdies 68 are moved toward the wire strands I6 so as to cut off theprojecting headed wire portions and at the same time form'the point orshank of the article which is thus being formed. The knives or cuttingmembers 68 engage the wire strands I6 at a point slightly beyond thegripping members I2 so that a small portion of each wire strand I6 willproject beyond the gripping members I2. This projecting portion 6| ofthe wire strands` forms the head 59 upon impact -of the hammer IItherewith.

the conventional pulling member at present in use on the materialforming machine may be removed and a pulling member constructedaccording to this invention may be substituted therefor together withgrooved wire straightening members similar to the members Il. Thegripping dies and the cutters capable of gripping and cutting theseveral wire strands are substituted for the gripping and cuttingmembers at present in use and at the same time a hammer having arelatively wide head is inserted in place of the conventional hammer sothat the head of the hammer will extend across the several wire strandsprojecting through the gripping members. In the present instance thereare disclosed two wire strands so that the capacity of the machine maybe doubled without the necessity of speeding up the working parts of themachine,

.but I do not wish to be limited to a structure showing only two wirestrands as if desired two I or more wire strands may be' operated uponsimultaneously, the pulling member and the straightening rollers I4together with the gripping 'members l2, the cutting member 60 and thehammer l I being so formed as to coincide with the number of wirestrands used with this device.

What I claim is:

l. In a machine as set forth, a reciprocating pulling member comprisinga base plate, an upstanding flange at each end of said base plateprovided with a plurality of spaced apart guide openings, a pair ofupstanding lugs integral with said base plate, a iixedjaw memberengaging one sidey of each lug, a right angularly disposed clampingplate engaging a jew member and another side of a lug, means removablysecuring said plate on a lug, each jaw member being disposed with thegripping face thereof aligning with a guide opening, a pair of bellcranks, means rockably securing said bell cranksvto said base plate, amovable jaw member carried by one arm of each bell crank in a positionconfronting a fixed jaw member, means removably securing a movable jawmember in said one arm of a bell crank, a pair of` cylinders carried bysaid base plate, a plungerslidable in each cylinder engageable with theother arm ofsa bell crank, each of said plungers having a reducedportion, a spring engaging about said reduced portion, and a nutengaging in an end of a cylinder and against an end of said springwhereby to tension said plunger.

2. In a machine as set forth, a reciprocating pulling member comprisinga base plate, a pair of upstanding lugs integral with said base plate, afixed jaw member engaging one side of each lug, a right angularlydisposed clamping plate engaging a jaw member and another side of a lug,means removably securing said plate on a lug, a pair of bell cranks,means rockably secur- `ing said bell cranks to said base plate, amovable plungers having a reduced portion disposed interiorly of acylinder, a spring engaging about said reduced portion, and a nutengaging in an end of a cylinder and against an end of said springwhereby to tension said plungers.

3. In a machine as set forth, a reciprocating pulling member comprisinga base plate, a 'pair of upstanding lugs integral with said base plate,a substantially L shaped jaw member engaging each lug, means removablysecuring a jaw member on a lug, a pair of bell cranks, means rockablysecuring said bell cranks to said base plate, a movable jaw membercarried by one arm of each bell crank in a position confronting a iixedjaw member, means removably securing a movable jaw member in said onearm of a bell crank, a pair of cylinders integral with said base plate,a plunger slidable in each cylinder engage` able with the other arm of abell crank, each of said plungers having a reduced portion disposedinteriorly of a cylinder, a spring engaging about Jos n: JESS HERNNDEZ.

